* fix path of composer auth

docker-compose.yml.example

@@ -63,4 +63,4 @@ secrets:
   user_known_hosts:
     file: ~/.ssh/known_hosts
   composer_auth:
-    file: ~/.composer/auth.json
+    file: ~/.config/composer/auth.json

get-composer-auth.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
-FILE=${HOME}/.composer/auth.json
+FILE=${HOME}/.config/composer/auth.json
 
 if [[ -f "${FILE}" ]]; then
   if [[ ! -z "$(cat $FILE | grep github)" ]]; then